Bank Routing Number

GNB Bank Routing Number

The primary ABA routing number (RTN) for GNB Bank, Grundy Center, IA is shown below.

Primary ABA / RTN

073905064

Verify before you send money. This is the bank's primary registered routing number, taken from the FFIEC National Information Center institution record (last refreshed here on October 8, 2026). Banks often use a different routing number for wire transfers than for ACH, and large banks vary it by region; always confirm the correct number on a check or with your bank before initiating a transfer.

What is an ABA routing number?

An ABA routing number, also called a routing transit number (RTN), is a 9-digit code that identifies a U.S. financial institution in the payment system. It tells ACH transfers, Fedwire payments, and paper checks which bank to route money to. The format was created by the American Bankers Association in 1910 and is still the backbone of U.S. domestic payments.

What is the difference between a routing number and an account number?

Your routing number identifies the bank; your account number identifies your specific account at that bank. On a paper check, the routing number is the 9-digit number in the bottom-left, and the account number is to its right.

What is the GNB Bank routing number?

The GNB Bank routing number is 073905064. It is the primary ABA routing transit number registered to GNB Bank, headquartered in Grundy Center, IA. A bank can hold more than one routing number, so this is the one on record for the institution, not necessarily the one printed on every check. The number comes from the FFIEC National Information Center institution record, last refreshed here on October 8, 2026.

What is the GNB Bank wire routing number?

This page lists 073905064, the primary routing number registered to GNB Bank. The record does not say whether the bank uses the same number for wire transfers, and many banks use a separate routing number for domestic wires. Confirm the wire routing number with GNB Bank before sending a wire.

Is ABA number 073905064 the routing number for GNB Bank?

Yes. ABA number 073905064 is the primary routing number registered to GNB Bank. Check it against the routing number on a check or in your online banking before sending an ACH payment, because a bank can use different numbers by region or product.

Which bank uses routing number 073905064?

Routing number 073905064 belongs to GNB Bank, headquartered in Grundy Center, IA. It is the bank's primary ABA routing number (FDIC certificate 14079).

Routing numbers of similar-size institutions in Iowa

Bank, Slater, IA: South Story Bank & Trust: 073922238
Bank, Sioux City, IA: Liberty National Bank: 073922869
Bank, Spencer, IA: Farmers Trust and Savings Bank: 073918857
Bank, Manchester, IA: Farmers & Merchants Savings Bank: 073903244
Bank, Pella, IA: Marion County State Bank: 073913674
Bank, Edgewood, IA: Community Savings Bank: 073914288
Bank, Indianola, IA: Peoples Savings Bank: 073922681
Bank, Washington, IA: Washington State Bank: 073902216

All routing numbers in Iowa

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Regulator records: FDIC BankFind (cert 14079) · FFIEC NIC profile (RSSD 724744)